[Origami] What to call a diagonal pleat fold eg. nautilus

[Diana Lee via Origami]

Hi,do you still call a fold a "pleat fold" if the folds are on the diagonal 
instead of exactly parallel to each other?  For example in the origami nautilus.
Example:1) start with a 4"x4" paper 
2) Fold into quarters, divide the paper into 4 sections of size 1"x4"
3) turn paper over
4) make 4 diagonal folds within each of the 4 sections.
5) Collapse to form a spiral or twist.
What do you call this twisted pleat fold?
Thank you, Diana